Just a stub page for this work at present, mainly to capture this unexpected reference, from "The Diapason", September 1967, accessed at https://sgcimages.s3.amazonaws.com/Diapason/Digitized%20Issues/1960_s/1967/September%201967.pdf on 28th June 2019:
SALISBURY IS HOST TO 1967 SO. CATHEDRALS FESTIVAL Reports from Salisbury indicate another successful Southern Cathedrals Festival July 27-29. At evensong Thursday, John Birch conducted the choir of the Chichester Cathedral in works of Tomkins, Watson and Rubbra. Richard Lloyd's recital preceded a performance of Peter Tranchell's light-hearted secular "who-dun-it" cantata, Murder at the Towers, sung at the Guild Hall.